Driving-gear.



Patented Apr. I, I902. C. F ALLEN.

DRIVING GEAR.

(Application filed Aug. 4, 1900.) (No Model.)

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Patented Apr. I, I902. 0. F. ALLEN.

DRIVING GEAR.

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CHARLES F. ALLEN, OF HUENEME, CALIFORNIA, ASSIGNOR OF ONE-HALF TO L. B.I-IOGUE'AND IV. C. HEWITT,

OF SANTA PAULA, CALIFORNIA.

DRIVING-1G EAR.

SPECIFICATION forming part of Letters Patent No. 696,704, dated April 1,1902. Application filed August 4, 1900. Serial No. 25,947. (No model.)

To aZZ whom it ntcty concern: A

Be it known that 1, CHARLES F. ALLEN, a citizen of the United States,residing at Hueneine, in the county of Ventura and State of California,have invented new and useful Improvements in Driving-Gear, of which thefollowing is a specification.

My invention relates to improved drivinggear especially designed for useupon automobiles and similar vehicles; and the object is to provide adivided rear axle of the vehicle with a differential gear which willrotate the respective sections or parts of the axle so that the wheelsmay turn at varying speeds when turning corners or accomplishing curves.

With this object in view the invention consists in the novelconstruction of parts and their operative aggroupment in combination, aswill be hereinafter fully specified and particularly pointed out anddistinctly claimed.

I have fully and clearly illustrated the improvements in theaccompanying drawings, to be taken as a part of this specification, andwherein- Figure 1 is a vertical transverse sectional View showing thegearing mounted on the divided axle and the parts or elements as inoperative relation. Fig. 2 is a view in elevation, partly in transverseand longitudinal vertical section.

Referring to the drawings, 1 designates the aXle upon which the improveddifferential gear is mounted, which axle is designed to represent therear axle of a road-vehicle and to be carried by proper wheels (notshown) in the well-known manner. The axle 1 is made in two parts orsections, as shown in Fig. 1, each of which is formed with a socket inits inner end, as at 6, in which is loosely arranged a bearing-pin 7.This bearing-pin extends a suitable distance into the adjacent andabutting ends of the aXle-sectionsand constitutes a bearing therefor andat the same time holds the parts in relative alinement with each other.A sleeve 8 is loosely mounted upon the abutting end portions of the axle1, and this sleeve is formed with a suitable number, preferably four, ofscrew-threaded sockets 9, each of which is adapted to receive the correspondingly-threaded stems 10 of a bearing-pin 11. Loosely mounted oneach of these bearing-pins 11 is a beveled pinion 12, which is arrangedto mesh with oppositely-arranged beveled face-gears 13, mounted on theaxle. One of these gears 13 is secured to each section of the axle 1,near the inner end thereof, preferably by set-screws 14:, and formed soas to fit snugly upon opposite sides of the sleeve 8, as indicated. Aring 15, comprising duplicate parts or sections, incloses the pinions12, and each of these sections is recessed in its inner face, as shownat 16, for the reception of the flattened heads 17 of the bearing-pins11, as shown. The united sections of the ring 15 are formed on theirouter faces or perimeters with V-shaped teeth 18, constitut ing atangential gear. This gear or ring comprises duplicate rings boundtogether bybolts 19, which pass through the heads 17,as shown in thedrawings. These bolts, it will be understood, not only serve to bind thetwo parts of the gear together, but also to retain the heads 17 inposition. The bolts 19 also ongage annular flanges 20, formed at the innor edges of collars 21, which project over the pinions 13 and bear uponthe sleeves or hubs 22 thereof. These collars 21 are loosely mountedupon the sleeves 22 and revolve thereon, and one of them is providedwith a fiat periphery or face 23, which is adapted to receive a suitablebrake-band 24-, which may be operated in any desired manner. The

opposite collar 21 is preferably provided with an annular groove 25 inits periphery, and in this groove is arranged a cable 26, which isoperated in any suitable manner and serves the purpose of a brake. thesecollars not only serve the purpose of brakes, but also fasten the partsof the gear in proper relation to each other and protect the interiormechanism from dust, doc.

The toothed ring 18 of the differential gear is locked to the axle bythe pinions 12, which mesh with the oppositely-disposed beveled gears13. By this arrangement of the gears 12 and 13, however, it will beunderstood that I the two sections of the axle 1Will be free to revolvein opposite directions, and this will obviously permit the two tractionor carrying It will be perceived that wheels upon the axle to revolve atdifferent speed when turning corners or when the vehicle is being turnedaround, thus preventing sliding, as in devices employing a revolvingaxle made in a single piece.

Motion may be imparted to the gear by any 5 suitable power-driven pinionor gear meshing s with the teeth thereof.

What I claim is 1. The combination with an axle formed of twosimilar-sections; of a pin loosely mounted within the adjacent end ofsaid sections, a beveled pinion secured to each section near the innerend tl1ereof,a sleeve loosely mounted upon the sections between thepinions, pins detachably secured to the sleeve and formed withprojecting flattened heads, a gear mounted upon each pin and engagingboth pinions, a toothed ring secured to the heads of the pins andsurrounding the axle, and collars secured to opposite sides of the ringand inclosing the pinions.

2. The combination with an axle formed of two similar sections; of a pinloosely mounted within the adjacent ends of the sections, a beveledpinion secured to each axle-section near the inner end thereof,a sleeveloosely mounted upon the sections and between the beveled pinions, pinsextending from and detachably secured to the sleeveand having projectingflattened heads, gears mounted upon the pins and engaging both pinionsof the axle, a gear formed of two similar rings secured to the heads ofthe pins and surrounding the axle, and a collar secured to each ring andinclosing the pinions, one of said collars having a grooved periphery.

3. The combination with an axle formed of two similar sections; of a pinloosely mounted within the adjacent ends of said sections, a pinionsecured to each section near the inner end thereof, a sleeve looselymounted upon the sections between the pinions, pins detachably securedto and extending from said sleeve, a gear mounted upon each pin andengaging both pinions, each pin having a flattened head, a sectionaltoothed ring having on the inner face of each section a recess for thereception of said heads, said ring formed of two similar rings, collarsat opposite sides of the toothed ring'and inclosing the pinions, andmeans for binding the collars, the rings, and the heads of the pinstogether.

In testimony whereof I affix my signature in presence of twowitnesses.

cHARLEs F. ALLEN.

Witnesses:

F. W. GERBERDING, A. B. SMITH.

